[Error Message] Activation mail not sended

[Dr_The_One]

In system email log show .
MyBB was unable to send the email using the PHP mail() function.

Users not getting activation email.
please help me.

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i tested with https://docs.mybb.com/1.8/faq/mail/

but it show PHP could not send the mail

[Dark-Power-Invader]

its your Hosting Provider problem look like your provider blocked php mail on your account you can try using SMTP mail through targethero, maichimp, etc.

[Dr_The_One]

I saw in https://docs.mybb.com/1.8/faq/mail/

edit the file inc/functions.php to try a workaround fix.

Find: php mail($to, $subject, $message, $headers);

Add before: php ini_set("sendmail_from", "[email protected]");

The final result of the edit should be: php ini_set("sendmail_from", "[email protected]"); mail($to, $subject, $message, $headers);

YOURDOMAIN in the above code must be replaced by the domain where the forum is hosted.
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Where to add YOURDOMAIN?

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I cant find php mail($to, $subject, $message, $headers);